Electric luminescent device

FIELD: electricity.

SUBSTANCE: electric luminescent device comprising substrate (1), at least one layer structure applied onto substrate, which comprises at least one organic electric luminescent layer (2) to emit light (10), which is laid out between the first electrode (3), laid out at side, where substrate is located, and the second electrode (4), laid at side of electric luminescent layer (2), distanced from substrate. Additionally it comprises electric insulation layer of material, which is chemically reacting with organic electric luminescent layer (2), suitable for separation of the second electrode (4) from organic electric luminescent layer (2) in limited area around blister defect.

EFFECT: reduced intensity of faults caused by leakage currents and short circuit.

10 cl, 4 dwg

 

The invention relates to an electroluminescent device containing an organic luminescent layer and a sealing layer for electrical passivation of the device.

Organic electroluminescent devices (organic EL devices) have a layered structure (EL-structure), which is superimposed on a substrate and which contains an organic luminescent layer (layer OLED (organic light emitting diodes (led)), a layer of p-type conductivity, the anode and cathode. Typical layer thicknesses are of the order of 100 nm. Typical voltage applied to the EL structure, are between 2 and 10 C. In addition, located between the OLED layer and the cathode layer is injection of electrons from a material having a low work function, such as barium. There are two possible effect, which will eventually have an adverse effect on the properties of emission of the organic EL device, and these are, on the one hand, the growth of dark, non-emitting areas (degradation of the EL device over time), and, on the other hand, a sudden failure in the equipment caused by leakage currents or short circuits between the cathode and the anode. In the prior art, the degradation of the organic EL device in the expansion of the dark areas was attributed to effects on the part of the multilayer structure of water/the logs, the impact increases as the temperature rises. EL-patterns so mechanically sealed, and the sealed space between the shell and EL-structure is filled with dry gas, which is chemically quite inert in relation to the overall layered structure. Mechanical shell prevents any additional reduction in the overall height of the organic LED, constrains the use of mechanical flexibility of organic layers, and, as optional component that makes organic LED is more expensive to manufacture, especially in cases when viewed large area OLED.

In order to protect the organic light against the penetration of water and oxygen, the document US 5505985 reveals additional coverage of the original organic LED layer coating of insulating material. The material of this protective layer is particularly suitable for preventing diffusion of moisture into the layers below. The protective layer preferably takes place in a vacuum, since the protective layer must not corrode nor organic luminescent layer or the electrode adjacent to the protective layer during the processing of the application. Electroluminescent device having protective layers of this species are smaller decrease in brightness relative to its initial the brightness, what electroluminescent device having no protective layer of this type.

However, the main advantage of organic EL devices is the ability ability to produce thin light sources covering a large area. It is precisely in the case of OLED layers large area covering several square centimeters, or more, that the presence of particles such as dust is unavoidable during the manufacturing process. Particles present on the substrate, such as dust particles of diameter substantially greater than the thickness of the electroluminescent layer, called testate defects, whose borders are undefined nature, when such layers are produced. No layered structure, or its part, does not lie within these shells. These defects are the result of unacceptable leakage currents and short circuits between the cathode and the anode. Short circuit usually does not arise in this case, until, in the course of work OLED, while the operating voltage should increase, due to the deterioration of the light output to provide the opportunity to utilize the previous amount of light. In contrast to the slow degradation of the brightness due to permeation of oxygen or water in the light-emitting layers, the failure of electroluminescent devices result in short circuits in the sphere of the shell defects become apparent as a sudden fall in brightness to zero. It is precisely in the case of EL devices have a large area that a short circuit in the field of shell defects, of course, are the most common cause of outages EL devices. The protection is against the infiltration of moisture or oxygen has no significant influence on the failure rate.

Therefore, the aim of the present invention is to provide an effective and simple protection for organic EL devices, which gives a significant reduction in the failure rate caused by leakage currents and short circuits.

This goal is achieved by an electroluminescent device containing the substrate, the substrate is marked with at least one layered structure, which contains at least one organic electroluminescent layer to emit light, which is arranged between the first electrode is arranged on the side on which the substrate, and a second electrode arranged on the side of the electroluminescent layer remote from the substrate, and the insulating layer from a material that is chemically reactive with the organic electroluminescent layer, suitable for separating the second electrode from the organic electroluminescent layer in a limited area around the shell of the defect.

Testate defect means an area, which no material was not deposited during the processing of the electroluminescence device. The reason testate defect, for example, is a particle of dust, which, due to the shading effect when one or more treatments directional coverage, is a consequence of the lack of material damage in the area around the dust particles. If the cause of testate defect is already present during the processing of applying organic electroluminescent layer, the organic material will also be absent in the field of testate defect, and it may be short circuit between the two electrodes. The possibility of a short circuit depends on the local strength of the electric field in the area of testate defect during operation of the electroluminescent device. Since the second electrode has an irregular shape in the region of the edges of this shell of a defect and therefore may have sharpened edges, there is a danger in this place a noticeable increase in the field strength and the subsequent spark overlap. This spark overlap itself can be a cause for denial of an electroluminescent device, or, otherwise, it creates a conductive jumper and self-reinforcing leakage currents, which flow in the jumpers and which later result in a short circuit, and hence, the refusal of the electroluminescent device. Since this is the danger of short circuits between beimi schemes, no matter whether the cause of testate defect remains in the field of testate defect as soon as electroluminescent device was completed.

As a result of separation of the second electrode from the electroluminescent layer, which is observed from the substrate, is located the below mentioned second electrode, the second electrode form a first anode due vnutriskalnyh stresses in the area around the shell of the defect and, thus, increases the distance between him and the first electrode, which is a result of the significant reduction in the tension field between the two electrodes in the field of testate defect. Due to the lamina of the second electrode, especially sharp edges of the second electrode on the rim of the shell, which shifted to a particularly large distance from the first electrode, which gives at least a substantial reduction in the risk of a short circuit and, thus, significantly reduced the failure rate, especially for electroluminescent devices of large area.

The insulating layer contains, in this case, a material that has electrical resistance that is at least as high as the electrical resistance of the layer (or layers)located between the electrodes, so that no leakage currents between the electrodes will not be ut is to look through an insulating layer. At the same time it is a material that corrodes organic layers, in order to reduce adhesion to the second electrode so that the second electrode is separated from the organic layer in the region of testate defect. These conditions are, for example, satisfied different polymers, such as epoxy resin, polyimides, acrylates, reaction, etc.

In one of the embodiments, the insulating layer is chemically inert with respect to the second electrode so that the insulating layer, forming on the second electrode, will not corrode the undamaged region of the second electrode. The second electrode, large areas of which are intact, required for the brightness, which should produce an electroluminescent device.

In yet another embodiment, the second electrode contains aluminum or a material containing aluminum. These categories of remarkable material possession nutricline voltage within the layered structure, which causes the bending separated parts of the second electrode, which is especially great.

In an additional embodiment, the insulating layer is applied when the ambient pressure. This gives a lower processing costs than vacuum coatings, such as are used for the electrodes and, for example, organic electricity is W, and gives the application the opportunity to occur in liquid form. If the material is electrically insulating layer is applied to the layered structure as a solution in the plasticizer, it is able to fill the full area of shell defect, regardless of any dust particles that may still be adhering to the layers and, thus, are able to separate the second electrode region testate defect.

In an additional embodiment, the insulating layer is cured by thermal or optical treatments. Through the operation of curing, a stop may be made in the processing, whereby the second electrode is separated from the organic layer under it, and the initial growth of such areas, which, due to the corrosive organic electroluminescent layer and the separated second electrode is not capable of emitting no light, may be limited to the area required to prevent short circuits. Processing of thermal curing, for example, is thermal vacuum evaporation of the plasticizer in the insulating layer. Other processing of thermal cure is thermal stabilization of two-component materials. Processing optical curing, for example, is illuminated with UV light radiation.

the alternative embodiment, the insulating material layer is applied in the form of a binary mixture. A two-component mixture, in this case, contains a curing agent and a binding agent. The advantage lies in the fact that the insulating layer hardens independently, without any additional processing step.

In an additional embodiment, the insulating layer has an average thickness of more than 1000 nm, to ensure that the insulating layer covers the underlying layered structure as a continuous insulating layer for filling regions testate defect sufficient amount of material of the insulating layer.

In an additional embodiment, additional means passivation is applied on the insulating layer. This tool passivation is designed to protect the insulating layer from mechanical damage, such as scratches, and against chemical influences, such as the infiltration of oxygen and moisture, which should be diminished. The tool passivation of this type, for example, may be a mechanical shell, having a volume of space around electroluminescent device, which is filled with an inert material, an inert liquid or inert gas.

In an additional embodiment, the wasp is estline, the tool is an organic passivation layer, superimposed on the insulating layer, which has a small diffusion rate for oxygen and water, such as an organic polymer. In contrast to devices with mechanical shell (coating), it provides an organic light able to retain its mechanical flexibility.

These and other aspects of the invention are apparent from and will be elucidated with reference to embodiments of which are described below.

In the drawings:

Figure 1 - schematic drawing of the layered structure in the field of testate defect.

Figure 2 shows the electroluminescent device according to the invention, which has significantly reduced the failure rate due to short circuits and leakage currents.

Figure 3 shows a variant implementation of the electroluminescent device according to the invention having a mechanical shell.

Figure 4 shows a variant implementation of the electroluminescent device according to the invention having a protective layer and no mechanical shell.

The layered structure of an EL device contains at least a separate thin layers 2, 3 and 4, which are typically created by processing directional dry coating, such as vacuum deposition and/or sputtering. When printing handling the Kah directional coverage of this type, the presence of particles 13, such as dust particles, has the consequence of a substrate or part of the layered structure, which should be covered, which is shaded, and hence, testate defects, as shown in figure 1. The diameters of such particles (which are not necessarily spherical, as shown in figure 1) are typically substantially greater than the thickness of the individual layers. Due to shading during processing of the coating, not at all, or only part, of the layered structure of the EL device is present within the shell defects. The size and shape of shell defects depend on the position and geometry of the particles 13, and from the time at which the particle 13 attended growing a layered structure during the manufacture of thin layers. If, due to particles 13, the organic electroluminescent layer 2 high resistance is no longer present in the area of testate defect, spark overlap may occur between the two electrodes 3 and 4. Under typical operating voltage 2 to 10 V between the electrodes and the typical spacing of the electrodes is 100 nm, there is a field of 20-100 kV/nm in EL structure. Even locally, edges testate defect generate a significantly higher field strength due to very small radii of curvature of the edges of the layer in testate defect. The difference between dielektricheskii and persistent organic luminescent layer (ε~3) and the material in the shell, which typically is air (ε=1), causes an additional increase of the field strength in the critical region of the edges of the defect layer. In addition, the dielectric strength of air is much lower than the organic luminescent layer, which additionally increases the risk of electric spark overlap. As well as creating an unregulated current flow, spark overlap 14 between the electrodes 3 and 4 also causes local heating of the layered structure, which, in the organic luminescent layer 2, may be a consequence of the carbon emitted locally. This carbon is deposited on the edges of shell defects and increases the conductivity on the edge of the shell of the defect, which favours the occurrence of the additional spark floors or leakage currents, even to a greater degree. This process of the self leads to the EL device, which is derived from the system. The occurrence of this process does not depend on whether one or more than one, depending on the implementation of the EL device, the organic layer between the anode and cathode.

In one of the embodiments, the layered structure of an electroluminescent device includes a thin package organic layer containing the electroluminescent layer 2 (such as activated three-hexa-hydrochinon the new aluminum typical thickness in the region of 100 nm, which is arranged between two electrodes (e.g., such as the anode 3 and the cathode 4, as shown in figure 4), of which at least one is transparent, to provide the generated light can emit. The oxide of indium and tin (ITO) is commonly used as a transparent conductive electrode material. Used as an opaque electrode is a conductive material such as, for example, a layer of aluminum, with a thickness of about 100 nm. However, there are also devices in which both electrodes are transparent. The layered structure 2, 3 and 4 is applied to the substrate 1. In this case, a distinction is made between the upper radiator and lower radiator. The lower emitters emit fluorescent light through the substrate 1. In this case, the anode 3 contains the ITO layer, and the cathode 4 - layer aluminum. The layered structure can also be applied to the substrate in the reverse order. The top emitter of this species in this case emits no light through the substrate, as shown in figure 1, and in the opposite direction. In this case, the transparent electrode on the side remote from the substrate may include a transparent material or a thin metal layer. Arranged between the organic luminescent layer 2 and the anode 4, there is usually a organic layer with p-type conductivity, typically, alpha-NPD (N,N'-di-(Naftal the h-2-yl)-N,N'-diphenyl benzidine) with a thickness of approximately 50 nm (not shown in figure 1 in this case). Located between the cathode 4 and the organic luminescent layer 2, there is usually a thin layer of injection of electrons from a material having a low work function, such as lithium, cesium, or barium, which layer (also not shown in figure 1) is important for good injection of electrons into the luminescent layer. This layer injection of electrons is very sensitive to moisture. The materials that were listed as examples for this variant implementation, can be replaced in other embodiments, the implementation of other materials known from the prior art.

The probability of testate defect increases with the square of the organic EL device. The advantage of organic luminescent devices, however, is exactly the configuration of the great square, which is possible with them. However, organic EL devices of large area can be manufactured with low failure rate, only when it can be prevented spark flashover between the electrodes 3 and 4. Passivation regions shells insulating layer 5 according to the invention, with the result shown in figure 3, is an effective and inexpensive solution. Completed EL-structure is covered with insulating layer 5.

To reduce the risk of spark overlaps between the electrodes 3 and 4, materialspecifications layer should have a significantly higher dielectric constant, than air. So are the predominant materials for which 4,5>ε>1,5. The materials should also have a significantly higher field strength than air (~4-5 kV/mm).

To be successful electrical passivation insulating layer 5 occurred in the areas of shell defects during processing application, the insulating layer 5 should completely displace the gases that are present in the areas of shell defects between the edges of the shells and particles 13, which may still may be stuck to them. To give the opportunity to penetrate into the cavity, which may be small, the liquid insulating layer 5 should have a surface tension, which is very small. Particularly useful in this case are the corresponding liquid having a surface tension of less than 2.5·10-2N/m In addition to its pestiviruses action insulating layer 5 can also be used for the dissipation of heat produced by the electroluminescent device in action, through heat transfer contact.

Through passivation according to the invention an electroluminescent device failure rate due to leakage currents and spark overlaps between the electrodes 3 and 4, it was possible to decrease significantly compared to electroluminescent devices, not having the insulating layer 5. This improvement was achieved due to the fact that the material of the insulating layer 5 chemically corrodes organic electroluminescent layer 2, or in the case of organic layers, at least an organic layer adjacent to the second electrode and, thus, makes the second electrode 4 to be separated from the organic layer 2 or system of organic layers in region 4a around the shell of the defect. In other embodiments, the implementation, the material of the insulating layer 5 can also be part of the organic layer 2, or may dissolve all organic layer 2 in the area around the shell of the defect. After processing Department, nutricline voltage in the second electrode 4 in the area 4a of the electrode cause the second electrode to thibetica from the organic electroluminescent layer 2 and the first electrode 3. This significantly increases the distance between the second electrode 4a and the first electrode 3 and, thus, at least significantly reduces the field strength. As a result of processing by the Department, any sharp edges that the second electrode 4a may be on the edge of the seat shell defect, embroidered from the first electrode, which means that the excessive increase of the field strength no longer occurs in this area. During the treatment the processing unit, the insulating material layer 5 should be enough liquid to fill the space that is created between the second electrode 4 and the organic electroluminescent layer 2 in the processing unit, so that no gas bubbles and reduced the intensity of the field is not generated between the electrodes 3 and 4. Liquid or flowable insulating layer 5 is then dried or cured in a different way, depending on circumstances. Depending on the material of the insulating material, it can be done thermally, by evaporation of the solvent, or by means of an optical curing, for example, ultraviolet radiation.

Epoxy resins are an example of materials suitable for insulating layer 5. These materials form a thin film on the second electrode 4. In the bending of the second electrode, they form, in the field of shell defects, swelling of the form shown schematically in figure 2, which is completely filled with the solution. After treatment, the cure, the electroluminescent device according to the invention continued to work without any short circuits occur, even at high operating voltages. Voltage up to 10 volts were applied in this case. The thickness of the layer should be at least 1 μm, h is usually used to give the effect according to the invention, and, for performance reasons, should not be greater than 1000 microns, and preferably should be between 10 microns and 100 microns.

Electrical passivation, which is achieved in this way can be used for all organic electroluminescent devices made from organic low molecular weight materials (so-called SMOLED) or polymers. The organic electroluminescent device of a large area, in particular, benefit from low sensitivity to dust particles, which gives lower production costs due to avoidance of expensive clean room conditions. The invention can be used for display devices, signs with lights or lighting purposes at all.

Figure 3 is a side view of an additional variant of implementation of the electroluminescent device according to the invention, namely a sealed electroluminescent device. In this case, it is equipped with a sealing device (means passivation) to provide protection from external moisture. Mentioned means passivation contains the coating 6, which, through the connections 7 of the adhesive coupling, seals layered structure containing luminescent layer 2, and firmly attached to it. The amount of space 9 is filled with dry gases, such cabinerty gases, or dehydrated fluids, such as dielectric fluid. The gas absorbing capacity materials can also be configured inside the hermetic shell to reduce the amount of moisture/water in the space 9. The electroluminescent device 10 emits light through the transparent first electrode 3 and the transparent substrate 1 (lower unit). In other embodiments, the implementation, the shell may also take other forms. To provide layered structures, located within the shell, the ability to get excited electric way, the conductors 8 and 3 protrude from the shell. In addition to the layered structure shown in figure 1, can also be additional layers, such as microporosity layers, to improve the coupling of light. These possible additional layers does not change the method according to the invention, which was described by the achievement of the main goal.

Mechanical shell, shown in figure 3 for protection of the property of emission of the electroluminescent device from becoming degraded as a result of penetration of moisture or oxygen into the organic layers, in another embodiment, it may be replaced by means of 6 passivation in the form of additional organic layer 6, which is deposited on the insulating layer 5, see figure 4. When there is transparent the second insulating layer 5, for example, of epoxy resin, and the transparent medium 6 passivation, for example, glass, an electroluminescent device, in additional embodiments, the implementation is also capable of emitting light 11 at the side remote from the substrate (known as the top emitter). In this case, the transparent insulating layer acts as an adhesive for glass. Glass, which is used as the transparent glass means 6 passivation, for example, is the same glass as used as glass substrates for the layered structure. Glass can be sealed with a layered structure as shaped in this case, as shown in figure 4, or may be applied to the insulating layer as a flat layer, in which case the side edges of the layered structure should then be closed through the connection 7 of the adhesive coupling, shown in figure 3.

Another approach to achieving the main objective of the present invention, namely the reduction of the number of defects in the layers through a very expensive technology clean rooms, could mean excessive rise of the cost of production and is not able to completely prevent the occurrence of defects in the layers just in case EL devices of large area.

Embodiments of which have been explained by reference to the drawings and opisanie, here are just a few examples electroluminescent device according to the invention to significantly reduce the failure rate due to leakage currents and short circuits, and should not be construed as limiting the invention to these examples. Alternative implementation is also comprehended by a person skilled in the art and such are also covered by the scope of the claims. The numbering of the independent claims is not implied implicitly expressing that other combinations of claims do not create useful embodiments of the invention. Moreover, the use of words in the singular or the word "one" in the description and the claims do not exclude the possibility of having more than one devices, nodes or elements.

1. The electroluminescent device containing
the substrate (1);
at least one layered structure deposited on a substrate, and the aforementioned at least one layered structure comprises at least one organic electroluminescent layer (2) for the emission of light (10), which is located between the first electrode (3)arranged near the substrate, and a second electrode (4)arranged on top of the electroluminescent layer (2), remote from the substrate, and
- elec is reisolation layer (5), contains material which is chemically reactive with the organic electroluminescent layer (2), and is suitable for separating the second electrode (4) from the organic electroluminescent layer (2) in a limited area around the shell of the defect.

2. The electroluminescent device according to claim 1, in which the insulating layer (5) is chemically inert with respect to the second electrode (4).

3. The electroluminescent device according to claim 1, in which the second electrode is made of aluminum or contains aluminum.

4. The electroluminescent device according to claim 1, in which the insulating layer is applied on said at least one layered structure at ambient pressure.

5. The electroluminescent device according to claim 1, wherein a material of the insulating layer (5) is applied on said at least one layered structure as a solution.

6. The electroluminescent device according to claim 5, in which the insulating layer (5) is cured by heat and/or optical processing.

7. The electroluminescent device according to claim 1, wherein a material of the insulating layer (5) is applied on said at least one layered structure in the form of a binary mixture.

8. The electroluminescent device according to claim 1, in which the insulating layer (5) has the media is Yuyu thickness of more than 1000 nm.

9. The electroluminescent device according to claim 1, additionally containing means (6) passivation deposited on the insulating layer (5).

10. The electroluminescent device according to claim 9, in which the tool (6) is an organic passivation layer, which has a slight diffusion rate for oxygen or water.



 

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6 cl, 1 tbl, 2 dwg, 6 ex

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to novel derivatives of fullerenes comprising organic amines and hydrogen atoms bound to fullerene-C60 molecule by 6,6-double bonds of the general formula: C60Hn(R1R2N)n wherein R1 means -C6H5CH2; R2 means -C6H5CH2; n = 4 (tetra-(dibenzylaminohydro)[60]fullerene); R1 means -C5H9; R2 means hydrogen atom (H); n = 3 (tri-(cyclopentylaminohydro)[60]fullerene). Also, invention relates to using derivatives of fullerenes, in particular, (tetra-(benzylaminohydro)[60]fullerene, (tetra-(dibenzylaminohydro)[60]fullerene, tri-(cyclopentylaminohydro)[60]fullerene, 2-(azahomo[60]fullereno)-5-nitropyrimidine, 1,3-dipropyl-5-[5'-(azahomo[60]fullereno)pentyl]-1,3,5-triazin-2,4,6(1H,3H,5H)-trione, O,O-dibutyl-(azahomo[60]fullereno)phosphate as acceptors of electrons in composites polymer/fullerene designated for photovoltaic cells. Also, invention relates to photovoltaic device comprising mixture of poly-conjugated polymer and abovementioned fullerene derivative or their mixture as an active layer. Also, invention relates to a method for synthesis of derivatives of fullerenes comprising aromatic amines and hydrogen atoms bound to fullerene-C60 molecule by 6,6-double bonds. Method involves interaction of C60 with the corresponding organic amine in solution, and this reaction is carried out in aromatic solvent medium in amine excess at temperature 25-70°C for 2-5 days followed by evaporation of solution and precipitation of the end product by addition of alcohol.

EFFECT: improved method of synthesis.

6 cl, 1 tbl, 2 dwg, 6 ex

FIELD: organic semiconductors.

SUBSTANCE: embossing or laminating film has at least one circuit component manufactured by using organic semiconductor technology, for instance one or more organic field-effect transistors; circuit component has several layers including electric functional layers with at least one organic semiconductor layer, at least one insulating layer, and electricity conductive layers. One or more layers of circuit component are made by way of thermal or ultraviolet replication including spatial structuring, part of at least one electric functional layer in spatial structuring region being fully separated.

EFFECT: improved circuit component production process using organic semiconductor technology.

28 cl, 9 dwg

FIELD: chemistry.

SUBSTANCE: there is disclosed method of injector polyaniline coating on the surface of transparent conductive oxide or metal layer on transparent substrate for the polymer electroluminescent diode, characterised that polyaniline coating is ensured with electrochemical synthesis of polyaniline from aniline solution being in contact with transparent conductive oxide or metal layer. Invention prevents softening ensured by prevented current spreading along the polyaniline layer, as well as by simplified procedure of polyaniline coating; homogeneous coating of easily controlled thickness; polyaniline coating of high continuity without through holes; with required pixel array addressing without additional polymer layers of reduced conductivity.

EFFECT: simplified and cheap making polymeric electroluminescent diodes.

10 cl, 2 dwg

FIELD: physics.

SUBSTANCE: organic light-emitting diode contains the bearing bottom executed in the form of glass or plastic layer with the anode transparent layer disposed on it. The layer of organic substance with hole conductivity (the hole-transport layer) is located on the anode, then the organic radiating (emission) layer, organic layer with n-type conduction (an electro-transport layer) follow. The emission layer can simultaneously carry out function of an electro-transport stratum. Over organic layers the cathode stratum is located. The cathode is executed from the composite material containing ytterbium, doped by thulium or europium in amount of not less than 10%. The device is characterised by high technical characteristics: the insert voltage makes 4 V, a running voltage at luminosity 150 cd/m2, that there corresponds to quantity of the working monitor, 4 V, efficiency of a luminescence - 2 lm/W. At the mentioned running voltage luminosity slope on 10% makes not less than 4000 hours.

EFFECT: expansion of a circle of substances for emission layer, capable to generate all basic and intermediate colours.

4 cl, 1 tbl, 1 dwg

FIELD: physics.

SUBSTANCE: in receiver of optical radiation comprising at least one heterostructure located on transparent substrate and enclosed between two light-transmitting anode and cathode electrodes and consisting of two layers of organic semi-conducting materials with different width of prohibited zone, layers of heterostructure are made of materials with maximums of absorption spectrums located in area λ≤450 nm and high light transmission in visible area of spectrum, at that light transmission of incident flux of radiation from receiver of optical radiation in visible area of spectrum makes at least 30%.

EFFECT: creation of optical radiation receiver transparent in visible area of spectrum.

3 cl, 5 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to new chemical compounds, particularly to complexes of scandium with heterocyclic ligands tris[2-(1,3-benzox(ti/imid)azol-2-yl)phenolate-O,N]scandium of general formula , where X - is oxygen, or sulphur, or NH, which can be used as an electroluminescent (emission) layer in organic light-emitting diodes (OLED). Invented also is an organic light-emitting diode, in which the emission layer is made from tris[2-(1,3-benzoxazol-2-yl)phenolate-O,N]scandium.

EFFECT: obtaining new chemical compounds which can be used as electroluminescent (emission) layer in organic light-emitting diodes (OLED).

6 cl, 3 ex

FIELD: physics; optics.

SUBSTANCE: invention relates to organic displays. The organic electroluminescent display has an organic electroluminescent device which has first and second display electrodes and at least one organic functional layer between the display electrodes and consisting of an organic compound; a base for holding the organic electroluminescent device; a film of a high-molecular compound which covers the organic electroluminescent device and the surface of the base along the perimetre of the organic electroluminescent device; and in inorganic barrier film which covers the high-molecular compound film, edges of the high-molecular compound film and the surface of the base along the perimetre of the high-molecular compound film; the high-molecular compound film used is a film made from aliphatic polyurea.

EFFECT: design of an organic electroluminescent display which is not dyed and is shock resistant.

6 cl, 2 dwg, 2 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention can be used in manufacturing organic light-emitting diodes, liquid-crystal displays, plasma display panel, thin-film solar cell and other electronic and semi-conductor devices. Claimed is element, including target of ionic dispersion, where said target includes processed MoO2 plate of high purity. Method of such plate manufacturing includes isostatic pressing of component consisting of more than 99% of stoichiometric MoO2 powder into workpiece, sintering of said workpiece under conditions of supporting more than 99% of MoO2 stoichiometry and formation of plate which includes more than 99% of stoichiometric MoO2. In other version of said plate manufacturing component, consisting of powder, which contains more than 99% of stoichiometric MoO2, is processed under conditions of hot pressing with formation of plate. Method of thin film manufacturing includes stages of sputtering of plate, which contains more than 99% of stoichiometric MoO2, removal of MoO2 molecules from plate and application of MoO2 molecules on substrate. Also claimed is MoO2 powder and method of said plate sputtering with application of magnetron sputtering, pulse laser sputtering, ionic-beam sputtering, triode sputtering and their combination.

EFFECT: invention allows to increase work of output of electron of ionic sputtering target material in organic light-emitting diodes.

16 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to macromolecular compounds with a nucleus-shell structure. The invention discloses macromolecular compounds with a nucleus-shell structure, whereby the nucleus has a macromolecular dendritic and hyperbranched structure based on carbon or based on silicon and carbon is bonded to at least three, in particular at least six external atoms through a carbon-based coupling chain (V) which is selected from a group consisting of straight and branched alkylene chains with 2-20 carbon atoms, straight or branched polyoxyalkylene chains, straight or branched siloxane chains or straight or branched carbosilane chains, with straight chains based on carbon oligomeric chains (L) with conjugated double bonds on the entire length. Conjugated chains (L) in each separate case are bonded at the end opposite the coupling chain (V) to one more, specifically, aliphatic, arylaliphatic or oxyaliphatic chain (R) without conjugated double bonds. The chains (V), (L) and (R) form the shell. The invention also discloses a method for synthesis of the said compounds.

EFFECT: novel organic compounds which can be synthesised using conventional solvents and have good semiconductor properties.

16 cl, 2 ex

FIELD: physics.

SUBSTANCE: invention relates to multilayer organic light-emitting diodes (OLED) and can be used in designing alternative sources of light and new-generation displays and making a light-emitting diode which operates for a long period of time. The invention discloses an OLED consisting of a transparent electrode, a light-emitting layer and a metal electrode. A protective silver layer is sprayed onto the surface of the metal electrode and in the lower part of the housing there are capsules containing water, oxygen and impurity active absorbers.

EFFECT: design of an OLED which enables to make thin-film panel light sources and full-format displays which retain brightness, contrast and working capacity in a long period of time.

5 cl, 1 tbl, 2 dwg

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